Explanation:
It is given that,
Number of turns, N = 200
Area of cross section, A = 8.5 cm²
Magnetic field is directed out of the paper and is, B = 0.06 T
The magnetic field is out of the paper decreases to 0.02 T in 12 milliseconds. We need to find the direction of current induced. The induced emf is given by :

Since, 
I is the induced current

According to Lenz's law, the direction of induced current is such that it always opposes the change in current that causes it.
Here, the field is directed out of the plane of the paper, this gives the induced current in counterclockwise direction.
Answer:

Explanation:
The spring system in the taptap obey's Hooke's law, which states that:

where
F is the magnitude of the force applied
k is the spring constant
x is the compression/stretching of the spring
In this problem:
- The force applied is the weight of the driver of mass m = 69 kg, so

- The compression of the spring is

So, the spring constant is

Answer:
Hope it will help you a lot.
Answer:
C
Explanation:
Ur welcome just took on test
Yes, our friend is right, because there is no contradiction to the law of conservation of mass in the above equation. It just the mass of the product is equal to the mass of reactants.. and that is shown in the equation you have presented earlier